利用verilog语言设计公共电话共包括以下几个状态：挂机、待机、身份确认、修改密码、通话等五个状态。内含详细的源码以及设计过程、模块-The use of public telephones were verilog language design include the following states: hang up, standby, identification, change passwords, call the five states. Includes a detailed